Home / 811,827.78-1,217,381.67-432,677.85

Finding the Fourth Proportional to 811,827.78, 1,217,381.67 and 432,677.85

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Solution

The fourth proportional to 811,827.78, 1,217,381.67 and 432,677.85 is: 648,824.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,827.78 : 1,217,381.67 = 432,677.85 : x
  2. Step 2: Convert to fraction form
    811,827.78/1,217,381.67 = 432,677.85/x
  3. Step 3: Cross multiply
    811,827.78x = 1,217,381.67 × 432,677.85
  4. Step 4: Simplify right side
    811,827.78x = 526,734,083,605.01
  5. Step 5: Solve for x
    x = 526,734,083,605.01/811,827.78
  6. Step 6: Final answer
    x = 648,824.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.